410 



INDEX. 



Retina, 183, 158. 

 Rhea, 327. 



Rhinoceros, 351, 344. 

 Rhizopoda, 240, 15, 185, 186. 



" skeleton of, 129. 

 Rodentia, 345, 335, 336, 337. 



" teeth of, 71, 335. 

 Rotifera, 26C, 219. 



" jaws of, 64. 

 Rudimentary Organs, 20T. 

 Ruminantia, 351. 



" stomach of, SS, 56. 



" see Ox, Ungulata. 



Salamander, 318, 296. 



" metamorphosis of, 174. 



Saliva, function of, 93. 

 Salivary Glands, 122. 

 Salmon, 316, 285. 

 Sand-flea, 284, 252. 

 Sandpiper, 332, 312. 

 Sarcolemma, 39, 204. 

 Sauropsida, 309. 

 Saururae, 394. 



Scales of Butterflies, 301, 272. 



" of Fishes and Reptiles,135, 102, 283. 

 Scallop, eye of, 181, 153. 



shell of, 2T2. 

 Scapular Arch, 146. 

 Scarabseus, 299. 

 Scarf-skin, 128. 

 Sclerobase, 129. 

 Scleroderm, 129. 

 Sclerotic, 183. 

 Scolopendra, 291, 259. 

 Scorpion, 288, 259. 



mouth of, 60. 

 " respiration in, 116. 

 Sea-anemone, see Polyp. 

 Sea-blubber, 24T. 

 Sea-butterfly, 273, 229. 

 Sea-fan, 256, 208. 

 Sea-hare, 274. 

 Seal, 355, 128. 

 Sea-lemon, 274. 

 Sea-lily, 258, 211. 

 Sea-lion, 355, 350. 

 Sea-slug, 274. 

 Sea-urchin, 202, 214. 



" absorption by, 94. 

 ' " alimentary canal of, 76, 39. 



" anatomy of, 39. 



" circulation in, 105. 



41 digestion in, 92. 



" growth of, 214. 



" mode of feeding, 52. 



" mouth of, 56. 



" respiration in, 112. 

 shell of, 28. 



" skeleton of, 130, 96. 



" spines of, 130, 97. 



Sea-urchin, teeth of, 64, 28. 

 Sea- worm, 268, 17, 223. 

 Secretion, 121. 



" see Gland. 

 Segmentation of egg, 197, 165. 

 Self-division, 191, 160. 

 Sensation, 176. 

 Sense of hearing, 178. 



" of sight, 180. 



" of smell, 177. 



" of taste, 177. 



" of touch, 176. 

 Sense-organs, see Sense. 



" development of, 204. 

 Sensibility, 176. 

 Sepia, 280, 248. 

 Serpent, see Snake. 

 Sertularia, 247, 192. 

 Serum, 98. 

 Seta?, 269. 



Setophaga, 340, 325. 

 Seventeen-year locust, 297, 266. 

 Shark, 314, 287. 



" eggs of, 194, 164- 



" gills of, 114, 287 



skeleton of, 137, 145. 

 Shells of Crustacea, 131. 



" of Echinoderms, 130. 



" of Mollusks, 133. 

 Shoulder-girdle, 146. 

 Shrew, 63, 346, 338. 

 Shrimp, 286. 



Sight, of Arthropods, 181. 



" of Ccelenterates, 180. 



" of Mollusks, 181. 



" of Vertebrates, 182. 

 Silk-gland, 40. 

 Silk-worm, 303. 

 Simia, 358, 353, 355. 

 Sinuses, 13S. 

 Siphonophora, 24S, 194. 

 Siphuncle, 279, 247. 

 Siren, 318. 



Sirenia, 349, 73, 343. 



" see Dugong. 

 Size of Animals, 221. 

 Skeleton, of Arthropoda, 131. 



of Birds, 116, 144. 

 " of Ccelenterates, 130. 

 " of Echinoderms, 130. 

 " of Fish, 138, 144, 112. 

 " of limbs, 146. 



Lion, 139, 116. 

 " Mammals, 139, 106, 114, 117- 

 120. 



" Mollusks, 133. 



Reptiles, 113, 115. 



of skull, 141, 108, 111. 

 " of Vertebrates, 134. 



of Whale, 114. 

 " see Exoskeleton. 



